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[Bug 861656] Re: Kernel oops when nbd device is removed before it is unmounted

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: dino99 <861656@xxxxxxxxxxxxxxxxxx>
Date: Mon, 15 Sep 2014 23:07:41 -0000
Reply-to: Bug 861656 <861656@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Quantal EOL was May 16 2014

** Changed in: nova (Ubuntu Quantal)
       Status: Incomplete => Invalid

** Changed in: linux (Ubuntu)
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/861656

Title:
  Kernel oops when nbd device is removed before it is unmounted

Status in “linux” package in Ubuntu:
  Invalid
Status in “nova” package in Ubuntu:
  Fix Released
Status in “qemu-kvm” package in Ubuntu:
  Invalid
Status in “linux” source package in Oneiric:
  Invalid
Status in “nova” source package in Oneiric:
  Invalid
Status in “qemu-kvm” source package in Oneiric:
  Invalid
Status in “linux” source package in Quantal:
  Won't Fix
Status in “nova” source package in Quantal:
  Invalid
Status in “qemu-kvm” source package in Quantal:
  Invalid

Bug description:
  My host has xfs rootfs.  It runs openstack with lxc, which creates the
  container root filesystems on qemu-nbd block devices with ext4fs by
  default.

  For probably 1 in 8 containers, when the host is working hard, I end
  up with ext4 errors which in the end prevent the host from cleanly
  rebooting.  http://people.canonical.com/~serge/20110927_001.jpg is one
  example.  Here is another one:

  [  178.736380] JBD2: I/O error detected when updating journal superblock for nbd13-8.
  [  178.736567] journal commit I/O error
  [  182.374588] br100: port 4(veth2) entering forwarding state
  [  182.376240] device veth2 left promiscuous mode
  [  182.376245] br100: port 4(veth2) entering disabled state
  [  182.983726] nbd14: NBD_DISCONNECT
  [  182.983979] nbd14: Receive control failed (result -32)
  [  182.984075] nbd14: queue cleared
  [  182.984525] nbd14: Attempted send on closed socket
  [  182.984530] end_request: I/O error, dev nbd14, sector 328280
  [  182.984533] Buffer I/O error on device nbd14, logical block 41035
  [  182.984538] EXT4-fs warning (device nbd14): ext4_end_bio:242: I/O error writing to inode 32327 (offset 0 size 4096 starting block 41036)
  [  182.984597] nbd14: Attempted send on closed socket
  [  182.984600] end_request: I/O error, dev nbd14, sector 328256
  [  182.984602] Buffer I/O error on device nbd14, logical block 41032
  [  182.984605] EXT4-fs warning (device nbd14): ext4_end_bio:242: I/O error writing to inode 32342 (offset 0 size 4096 starting block 41033)
  [  182.984770] JBD2: Detected IO errors while flushing file data on nbd14-8
  [  182.984776] nbd14: Attempted send on closed socket
  [  182.984779] end_request: I/O error, dev nbd14, sector 1049856
  [  182.984794] Aborting journal on device nbd14-8.
  [  182.984802] nbd14: Attempted send on closed socket
  [  182.984804] end_request: I/O error, dev nbd14, sector 1048576
  [  182.984807] Buffer I/O error on device nbd14, logical block 131072
  [  182.984809] lost page write due to I/O error on nbd14
  [  182.984812] JBD2: I/O error detected when updating journal superblock for nbd14-8.
  [  182.984825] journal commit I/O error
  [  184.789984] br100: port 3(veth1) entering forwarding state
  [  184.791634] device veth1 left promiscuous mode
  [  184.791639] br100: port 3(veth1) entering disabled state
  [  185.236242] nbd12: NBD_DISCONNECT
  [  185.236362] nbd12: Receive control failed (result -32)
  [  185.236418] nbd12: queue cleared
  [  185.236734] nbd12: Attempted send on closed socket
  [  185.236737] end_request: I/O error, dev nbd12, sector 328280
  [  185.236740] Buffer I/O error on device nbd12, logical block 41035
  [  185.236745] EXT4-fs warning (device nbd12): ext4_end_bio:242: I/O error writing to inode 32327 (offset 0 size 4096 starting block 41036)
  [  185.236804] nbd12: Attempted send on closed socket
  [  185.236806] end_request: I/O error, dev nbd12, sector 328256
  [  185.236809] Buffer I/O error on device nbd12, logical block 41032
  [  185.236812] EXT4-fs warning (device nbd12): ext4_end_bio:242: I/O error writing to inode 32342 (offset 0 size 4096 starting block 41033)
  [  185.236998] JBD2: Detected IO errors while flushing file data on nbd12-8
  [  185.237005] nbd12: Attempted send on closed socket
  [  185.237007] end_request: I/O error, dev nbd12, sector 1049856
  [  185.237025] Aborting journal on device nbd12-8.
  [  185.237034] nbd12: Attempted send on closed socket
  [  185.237036] end_request: I/O error, dev nbd12, sector 1048576
  [  185.237039] Buffer I/O error on device nbd12, logical block 131072
  [  185.237041] lost page write due to I/O error on nbd12
  [  185.237044] JBD2: I/O error detected when updating journal superblock for nbd12-8.
  [  185.237059] journal commit I/O error
  [  185.342363] nbd14: Attempted send on closed socket
  [  185.342369] end_request: I/O error, dev nbd14, sector 0
  [  185.342374] Buffer I/O error on device nbd14, logical block 0
  [  185.342375] lost page write due to I/O error on nbd14
  [  185.342388] EXT4-fs error (device nbd14): ext4_put_super:771: Couldn't clean up the journal
  [  185.342392] EXT4-fs (nbd14): Remounting filesystem read-only
  [  185.342394] EXT4-fs (nbd14): previous I/O error to superblock detected
  [  185.342399] nbd14: Attempted send on closed socket
  [  185.342401] end_request: I/O error, dev nbd14, sector 0
  [  185.342404] Buffer I/O error on device nbd14, logical block 0
  [  185.342405] lost page write due to I/O error on nbd14
  [  185.352231] nbd12: Attempted send on closed socket
  [  185.352236] end_request: I/O error, dev nbd12, sector 0
  [  185.352239] Buffer I/O error on device nbd12, logical block 0
  [  185.352241] lost page write due to I/O error on nbd12
  [  185.352252] EXT4-fs error (device nbd12): ext4_put_super:771: Couldn't clean up the journal
  [  185.352256] EXT4-fs (nbd12): Remounting filesystem read-only
  [  185.352258] EXT4-fs (nbd12): previous I/O error to superblock detected

  
  [  178.733767] nbd13: NBD_DISCONNECT
  [  178.733865] nbd13: Receive control failed (result -32)
  [  178.733911] nbd13: shutting down socket
  [  178.733914] nbd13: queue cleared
  [  178.734250] nbd13: Attempted send on closed socket
  [  178.734254] end_request: I/O error, dev nbd13, sector 328280
  [  178.734257] Buffer I/O error on device nbd13, logical block 41035
  [  178.734262] EXT4-fs warning (device nbd13): ext4_end_bio:242: I/O error writing to inode 32327 (offset 0 size 4096 starting block 41036)
  [  178.734334] nbd13: Attempted send on closed socket
  [  178.734336] end_request: I/O error, dev nbd13, sector 328256
  [  178.734338] Buffer I/O error on device nbd13, logical block 41032
  [  178.734342] EXT4-fs warning (device nbd13): ext4_end_bio:242: I/O error writing to inode 32342 (offset 0 size 4096 starting block 41033)
  [  178.736325] JBD2: Detected IO errors while flushing file data on nbd13-8
  [  178.736339] nbd13: Attempted send on closed socket
  [  178.736343] end_request: I/O error, dev nbd13, sector 1049856
  [  178.736361] Aborting journal on device nbd13-8.
  [  178.736370] nbd13: Attempted send on closed socket
  [  178.736372] end_request: I/O error, dev nbd13, sector 1048576
  [  178.736375] Buffer I/O error on device nbd13, logical block 131072
  [  178.736377] lost page write due to I/O error on nbd13
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 1.23-0ubuntu2
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  serge     18231 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xf6afc000 irq 47'
     Mixer name	: 'Conexant CX20583 (Pebble HSF)'
     Components	: 'HDA:14f15067,102802d8,00100300'
     Controls      : 9
     Simple ctrls  : 6
  DistroRelease: Ubuntu 11.10
  HibernationDevice: RESUME=UUID=6dd34b33-9e9e-46ef-9cd8-3ce1c68b7da3
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
  MachineType: Dell Inc. Vostro 1220
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=d31d979b-16d0-4522-9043-23b4f85aeb89 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-12-generic N/A
   linux-backports-modules-3.0.0-12-generic  N/A
   linux-firmware                            1.60
  Tags:  oneiric running-unity
  Uname: Linux 3.0.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout kvm libvirtd lpadmin plugdev sambashare
  dmi.bios.date: 10/15/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.3.0
  dmi.board.name: 0X482M
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr1.3.0:bd10/15/2009:svnDellInc.:pnVostro1220:pvr:rvnDellInc.:rn0X482M:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Vostro 1220
  dmi.sys.vendor: Dell Inc.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 1.23-0ubuntu2
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  serge      7491 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xf6afc000 irq 47'
     Mixer name	: 'Conexant CX20583 (Pebble HSF)'
     Components	: 'HDA:14f15067,102802d8,00100300'
     Controls      : 9
     Simple ctrls  : 6
  DistroRelease: Ubuntu 11.10
  HibernationDevice: RESUME=UUID=6dd34b33-9e9e-46ef-9cd8-3ce1c68b7da3
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
  MachineType: Dell Inc. Vostro 1220
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=d31d979b-16d0-4522-9043-23b4f85aeb89 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-12-generic N/A
   linux-backports-modules-3.0.0-12-generic  N/A
   linux-firmware                            1.60
  Tags:  oneiric running-unity
  Uname: Linux 3.0.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout kvm libvirtd lpadmin plugdev sambashare
  dmi.bios.date: 10/15/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.3.0
  dmi.board.name: 0X482M
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr1.3.0:bd10/15/2009:svnDellInc.:pnVostro1220:pvr:rvnDellInc.:rn0X482M:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Vostro 1220
  dmi.sys.vendor: Dell Inc.

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